Discussion on the Practice of Data Processing of GNSS Precision Point Positioning

GNSS precise point positioning technique uses the data of satellite precise orbit and precision clock error provided by IGS, as well as a single GNSS signal receiver, to comprehensively process and accurately correct various errors. It also uses the collected pseudorange and carrier phase observations to determine the precise coordinates of the user. In this paper, the precise point positioning is processed through static observational data. We use the downloaded precise product data and utilize two PPP software, RTKLIB, and PPPH. With the appropriate error correction model and parameter processing strategy, the centimeter-level positioning accuracy is obtained.